By definition, the determinant equals ad - bc. What is the value of when x = -2 and y = 3? I NEED HELP PLEASE
Answers
Answer:
B. -84Step-by-step explanation:
Taking the determinant of the matrices we will have;
= 4x(5y) - 2x(3y)
= 20xy - 6xy
= 14xy
Given x = -2 and y = 3
Determinant = 14(-2)(3)
Determinant = -28*3
Determinant = -84
Related Questions
Please provide with an explanation to get brainiest
Answers
Solve the right triangle.
Round your answers to the nearest tenth.
Answers
Answer:
b= 16.6
B= 46 degrees
c= 23
Step-by-step explanation:
Yep brainliest if correct
Answers
2197
hope that helps
9514 1404 393
Answer:
B) -125
Step-by-step explanation:
Put the numbers where the variables are and do the arithmetic.
(a^2 -b^2)^3
= (2^2 -(-3)^2)^3
= (4 -9)^3
= (-5)^3
= -125 . . . . . matches choice B
In one town, 47% of all voters are Democrats. If three
voters are randomly selected for a survey, what is the
probability that they are all Democrats?
Answers
Answer:
The probability that the all three votes are Democrats
P(X=3) = 0.1038
Step-by-step explanation:
Step(i):-
Given that the all voters are democrats
The probability that the all voters are democrats
p = 47% =0.47
q = 1-p =1-0.47 = 0.53
Step(ii):-
Let 'X' be the random variable in binomial distribution
[tex]P(X=r) = n_{C_{r} } p^{r} q^{n-r}[/tex]
The probability that the all three votes are Democrats
P(X=3) = 0.1038
n=3 and r=3
[tex]P(X=3) = 3_{C_{3} } (0.47)^{3} (0.53)^{3-3}[/tex]
[tex]P(X=3) = 1 (0.47)^{3}[/tex]
P(X=3) = 0.1038
Final answer:-
The probability that the all three votes are Democrats
P(X=3) = 0.1038
solve and graph 3t - 12 < -9
Answers
Answer:
x = anything lower than 1
Step-by-step explanation:
x < 1
The constraint of inequality 3t - 12 < -9 is t < 1 and has been plotted on a number line.
What is inequality?A mathematical phrase in which the sides are not equal is referred to as being unequal. In essence, a comparison of any two values reveals whether one is less than, larger than, or equal to the value on the opposite side of the equation.
In other words, inequality is just the opposite of equality for example 2 =2 then it is equal but if I say 3 =6 then it is wrong the correct expression is 3 < 6.
Given the inequality
3t - 12 < -9
Add 12 on both sides
3t - 12 + 12 < -9 + 12
3t < 3
Divide by 3 into both sides
t < 1
Hence "The constraint of inequality 3t - 12 < -9 is t < 1".
For more about inequality,
brainly.com/question/20383699
#SPJ2
Points C, A, and Bare collinear
How many labeled points are between points A and D?
zero
one
two
an infinite number
Answers
Which statement best describes the function below? f(x)=2x^3+2x^3-x
Answers
Answer:
A
Step-by-step explanation:
It is a one-to-onw function
+
2
8
2
Least multiple that is the sam
Add using renamed fractions
Answers
Answer:
no
Step-by-step explanation:
What is the area,in square yards of the rectangle shown down below 12yd 15yd Answer choices are 225,54,180,27
Answers
Answer:
area of rectangle =length ×width
area of rectangle=12yd×15yd
area of rectangle=180yd²
So 12*15=180
The answer is c
Helppppppp pleaseee I’m confused
Answers
Answer:
I guess u turn it into fraction from i think
at total of 2 feet of snow falls over three days on the first day 1/6 of the snow falls on the second day 7/12 of the snow falls
PLZZ HELPP
Answers
Answer:
[tex]Day\ 3 = 1\frac{3}{12}[/tex]
Step-by-step explanation:
Given
[tex]Total = 2ft[/tex]
[tex]Day\ 1 = \frac{1}{6}[/tex]
[tex]Day\ 2 = \frac{7}{12}[/tex]
Required
Determine the amount of snow on day 3
This can be calculated using:
[tex]Day\ 1 + Day\ 2 + Day\ 3 = Total[/tex]
Substitute values for the known parameters
[tex]\frac{1}{6} + \frac{7}{12} + Day\ 3 = 2[/tex]
Collect Like Terms
[tex]Day\ 3 = 2 - \frac{1}{6} - \frac{7}{12}[/tex]
Take LCM
[tex]Day\ 3 = \frac{24 - 2 - 7}{12}[/tex]
[tex]Day\ 3 = \frac{15}{12}[/tex]
Express as mixed number
[tex]Day\ 3 = 1\frac{3}{12}[/tex]
Brian walk 1 1/4 miles in 5/12 hour. What is Brian's unit rate?
Answers
Answer:
3 miles per hour
Coach Kay has assets that total $22,500 and liabilities that total $48,000. What is Coach Kay's net worth?
Answers
Answer:
70,500
Step-by-step explanation:
Add 22,500 and 48,000
HELP HELP PLEASE IM BEGGING YOU HELP!
Answers
Answer:
22 * n + 4
Step-by-step explanation:
whats the largest number that can round to 440000?
Answers
Answer:
439999.999999999999999
Step-by-step explanation:
Find a solution to the linear equation y=-4x+36 by filling in the boxes with a valid value of x and y
Answers
Answer:
23
Step-by-step explanation
grief
tail
abridge
train
remind
habitat
gate
appointment
afford
stream
cheat
reckless
mixture
favorable
cultivate
horizon
please
garbage
show
headquarters
Kiran’s backpack weighs 3 pounds less than Clare’s backpack. Clare’s backpack weighs 14 pounds. How much does Kiran’s backpack weigh?
Answers
Answer:
well I have this question too if you are doing amplify math so I got the soulutions x+3=14 and x=14-3.
Step-by-step explanation:
And for the x= part its x=11
х2 - 6х + 40 = (х + 5
Answers
Solution for quadratic equation
Subtract 40 from both sides.
x^2 - 6x + 40 - 40 = x + 5 - 40
= x^2 - 6x = x - 35
Subtract x from both sides.
x^2 - 6x - x = x - 35 - x
= x^2 - 7x = -35
Rewrite the equation in the form
(x + a)^2 = b
(x - 7/2)^2 = - 91/4
Answer
x = 7/2 + sqroot 91/2,
x = 7/2 - sqroot 91/2
Solution to simplify
Group like terms
x^2 - 6x + 40 = x + 5
x^2 - 6x - x = 5 - 40
x^2 - 7 = -35
Tyree wants to know if the value of -1 3/4, raised to the 12th power is a positive or negative number
Answers
9514 1404 393
Answer:
positive
Step-by-step explanation:
The exponent 12 tells you how many times (-1 3/4) is a factor in the product. The number 12 is even, so there will be an even number of minus signs in the product. That results in a positive product.
__
The value is ...
825.005006849765777587809625
Help please due today!!!
Answers
Answer:
C
Step-by-step explanation:
Ivy says:
f(1) = -100
f(n) = -100 + 50( n - 1 )f(1) = -100 + 50( 1 - 1 )f(n) = -100 + 50(0 ) anything times 0 is 0!f(1) = -100You do that with the other numbers in the sequence. 2 = -50, 3 = 0 and so on
When you to n as 1, 2, and 3 they seem to all check out. So Ivy is right!
Andrey says:
f(1) = -100f(1)= -150 +50(1)f(1) = -150 + 50f(1) = -100That's a little suspicious don't you think that both answers are right..
Essentially they are both the same equation!
So let's simplify Ivy's equation!
f(n) = -100 + 50( n - 1 )
f(n) = -100 + 50n - 50
f(n)= -150 +50n
Which is basically Andrey's equation and they both seem to be right for the sequence! So both of them are right!
Xei uses a tip calculator to figure his tips, but he thinks it is not working accurately. The tip calculator says that a $7 tip is necessary for a $75 meal at a 15% tip rate. Is the calculator working correctly? How do you know?
Answers
Answer:
a $7 tip is too little
Step-by-step explanation:
find the tax sales on item divide the price of the item by 20 write an algebraic expression to find the sales tax on an item that cost three dollars find the sales tax on a television that cost $800
Answers
Answer:
Step-by-step explanation:
tax = 1/20 of price
1/20 of $3 = 1/20 × 3 = 3/20 = $0.15
1/20 of $800 = 1/20 × 800 = $40
given f(x) = 1/4 (5-x)^2 what is the value of f(11)
Answers
Answer:
9
Step-by-step explanation:
f(11) means that x = 11 (plug it in)
f(11) = 1/4(5-11)^2
= 9
The value of f(11) is 9.
The function of a given term is a form of an expression where element of the domain consists of a unique identity and each input value of a function is allocated to only one output value.
From the parameters given;
[tex]\mathbf{f(x) = \dfrac{1}{4}(5 - x)^2}[/tex]
we are to replace x with 11 wherever we see x
∴
[tex]\mathbf{f(11) = \dfrac{1}{4}(5 - 11)^2}[/tex]
[tex]\mathbf{f(11) = \dfrac{1}{4}(-6)^2}[/tex]
[tex]\mathbf{f(11) = \dfrac{1}{4} \times 36}[/tex]
f(11) = 9
Learn more about a function a term here:
https://brainly.com/question/10283950
a coach on a motorway is travelling at a constant speed . in ten minutes it travels 16 kilometer
work out its travells
20 minutes
please answer
30 minutes
50 minutes
1 hour
Answers
Step-by-step explanation:
10 minutes= 16km
20 minutes= 16x2 = 32km
30 minutes= 16x3 = 48km
50 minutes= 16x5 = 80km
60 minutes = 16x6 = 96km
I hope this helps, have a great day! :) -wilzW
Calculator
What is the value of x?
8 in.
15 in.
Enter your answer in the box.
5 in
X=
in.
Answers
Answer:
x = 24 in
Step-by-step explanation:
The corresponding sides of similar triangle will be in same proportion.
[tex]\frac{x}{8}=\frac{15}{5}\\\\\frac{x}{8}=3\\\\x = 3*8\\x = 24[/tex]
Step-by-step explanation:
x/15 = 8/5
x = 15 * 8 / 5
x = 24
answer
x = 24 in
Please answe number 1 PLEASE
Answers
Answer:
i believe the answers D
Step-by-step explanation:
Answer:
i think its B
Step-by-step explanation:
Select the correct answer.
The length of a rectangle is units greater than its width. If the width is w, which expression gives the perimeter of the rectangle in terms of its width?
A.
4w + 3
B.
w – 3
C.
5w
D.
6w + 4
Answers
Answer:
hope it helps
Step-by-step explanation:
A student in eighth grade notices that the current cost of of tuition, books, and fees at a 4 year college is $16,000 per year. The family reads that there is an annual increase of $450 per year.
What will the the total cost of tuition, books, and fees for this student when this student attends college for four years, after graduating high school?
$73,700
$75,700
$77,100
$78,900
Answers
Answer: It's (B) $75,700
50 POINTS!!!!!!! WILL GET BRAINLIEST IF CORRECT!!!!!
Answers
Answer:
43
Step-by-step explanation:
Diana is painting a circular mural on her wall.
Her mural is going to have a diameter of 7
feet. How much wall space will she be
painting?
Answers
Answer:
3.5 hope I help you that's the answer